Harrow



f1. w. BOWMAN.

HARROW.

APPLICATION FILED SEPT.21| 1918.

Patented Jan. 20, 1920.

`vlllllmn a llllllmur a Swami/C01 utk-num:

JAMES W. BOWMAN, OF MORLEY, MISSOURI.

HARROW.

`Application filed Septemberal, 1918.

To all lwhom 'it may concern.'

Be it known that I, JAMES W. BOWMAN, a citizen of the United States,y residing at Morley, in the county of Scott and State of Missouri, have invented certain new and useful Improvements in Hai-rows, of which the following is a specification, reference being' had to the accompanying drawings.

This invention relates to certain improvements in harrows and has relation more particularly to a device of this general character of a revolving type; and it is an object of the invention to provide a harrow having novel and improved means whereby the tooth-carrying cylinder may be readily and conveniently adjusted relative to' the ground to be worked in order to regulate the 'extent of penetration of the teeth.

The invention also has for an object to provide a novel and improved device of this general character wherein the teeth Carried by the cylinder are cleaned in an automatic manner.

Furthermore it is an object of the invention to provide a device of this general character having novel and improved construction whereby the operator is prevented from falling upon the tooth-carrying cylinder and whereby the reins are prevented from becoming entangled with said cylinder.

The invention consists in the details of construction and in the combination and arrangement yof the several parts of my improved harrow whereby certain important advantages are attained and the device is rendered simpler, less expensive and otherwise more convenient and advantageous for use, all as will be hereinafter more fully set forth.

The novel features of the invention will hereinafter "be definitely claimed.

In order that my invention may be the better understood, I will now proceed to describe the same with reference to the accompanying drawings, wherein Figure l is a view in top plan, with a portion broken away, of a harrow constructed in accordance with an embodiment of my invention; and

Fig. 2 is a vertical sectional view taken through the device as disclosed in Fig. l.

As herein embodied, F `denotes a rectangular frame of predetermined dimensions and having its longitudinal aXis arranged substantially at right angles to the direction of travel thereof. The opposite ends of the Specification of Letters Patent.

Patented Jan. 20, 1920.

Serial No. 255,085.

frame F are provided with the trunnions or stub axles l upon which are mounted the supporting wheels 2 whereby the device may ce readily transported. The upper or top face of the frame F is closed by the platform or covering P for a purpose which will hereinafter be more fully set forth.

A side of the frame F is provided with the draft rigging D of a conventional type. The opposite longitudinal marginal portion of the frame is provided along its lower edge with the inwardly disposed and longitudinally spaced lingers 3 between which are adapted to pass the teeth 4 projecting radially from the cylinder C.

As herein embodied, the cylinder C comprises the circular heads 5 connected by the straight lbars 6 and from which bars the teeth 4 hereinbefore referred to extend, said teeth 4 being preferably straight.

The heads 5 are provided with the outstanding stub shafts or trunnions 7 rotatably engaged with the arms 8 pivotally supported by the frame F and whereby it will be perceived that the cylinder C is capable of substantially vertical movement in order t0 adjust the same relative to the ground to be worked so that the extent of penetration of the teeth 4; may be regulated in accordance with the necessities of practice. The arms 8 are pivotally engaged with the end members of the frame F adjacent the rear side member of said frame. By this arrangement the cylinder C in its lifting movement will swing upwardly and rearwardly, and which in practice results in the harrow being employed with greater elicie-ncy, as additional resistance is afforded to the cylinder C as the device is drawn over the ground. It is to be noted that the cylinder C is at all times positioned below the platform or covering P. By this arrangement the driver or occupant of the seat structure S is prevented from falling upon the cylinder and becoming injured and the driving reins are prevented from becoming entangled with the cylinder C. In practice this has proven of manifest importance.

The free end portions of the arms 8 extend beyond the cylinder C and are connected by the rigid member or rod 9. The member 9 is operatively engaged, as at l0, with the lower end portion of the lever l1 pivotally engaged at a predetermined point intermediate its length with the frame F. The lever has its opposite or upper end portion terminating in such proximity to the seat structure S as to readily permit the same being manipulated by the occupant of said seat. The lever 11 is provided with a latch 12 of a conventional type and which coacts with the rack 14 carried by the frame or the platform or covering P and whereby the cylinder C may be readily held at different elevations.

From ythe foregoing description, it is thought to be obvious that a harrow con structed iny accordance with my invention is of an extremely simple and comparatively inexpensive nature and is particularly Well adapted for use by reason of the convenience and facility with which it may be assembled, and it will also be obvious that my invention is susceptible of some change and modification Without material departure from the principles and spirit thereof and for this reason I do not wish to be understood as limiting myself to the precise arrangement and formation of the several parts herein shown in carrying out my invention in practice, except as hereinafter'claimed.

I claim:

A. harrow comprising a portable frame substantially rectangular in form, arms pivotally engaged with the ends of the frame adjacent the rear side of the frame for swinging movement in a vertical plane, a cylinder comprising heads having trunnions rotatably engaged with the arms, bars connecting the peripheral portions of the heads and circumferentially spaced, ground working teeth carried by the bars and substan tially radiating from .the cylinder, a platform carried by the frame and overlying the cylinder, a member connecting the forward end portions of the arms, a lever supported for rocking movement by the platform and extending therebelow, and an operative connection between the lower portion of the lever and the member connecting the forward end portions of the arms, whereby the cylinder may be raised or lowered by the lever.

In testimony whereof I hereunto aix my signature in the presence of two witnesses.

JAMES W. BOWMAN.

Witnesses:

W. C. POYNTER, W. R. ALIEN. 

